[1] ROYAL FREE HOSP,DEPT HAEMATOL,POND ST,LONDON NW3 2QG,ENGLAND
[2] ROYAL FREE HOSP,DEPT PAEDIAT,LONDON NW3 2QG,ENGLAND
[3] ROYAL FREE HOSP,DEPT EAR NOSE & THROAT,LONDON NW3 2QG,ENGLAND
[4] WHITTINGTON HOSP,DEPT HAEMATOL,LONDON N19 5NF,ENGLAND
[5] WHITTINGTON HOSP,DEPT CHEM PATHOL,LONDON N19 5NF,ENGLAND